Project title:
Phi1-Phi2 Study

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Grant information:
AHA

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Relevant publications:

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Project description:
This dataset is part of an unpublished project focused on analyzing intrinsic phase parameters, specifically phi1 and phi2. The main data file includes raw physiological data, with each entry 
containing the following fields: figure number (Fig.No.), subject age, omega1_bpm, omega2_bpm, phi1, phi2, RHDN, EnvRatio, C_ratio, C_ratio_mod, omega1_bar, omega2_bar, DicroticNotch, 
Duration, Pmin, Pmax, Diast_max, Diast_time, p_notch, c, a1, b1, a2, b2, R1, R2, and HR_BPM. These parameters represent a wide range of intrinsic frequency and pressure waveform features. 
Additionally, the "BookFigs Info" folder contains individual MATLAB (.mat) and Excel (.xlsx) files corresponding to each figure, providing organized, figure-specific datasets for further analysis 
and visualization.

Parameter              Description
---------                 -----------
omega1_bpm        First intrinsic frequency (beats per minute)
omega2_bpm        Second intrinsic frequency (beats per minute)
Del-omega            Difference between omega1 and omega2
phi1                       Initial phase of first intrinsic frequency
phi2                       Initial phase of second intrinsic frequency
RHDN                    Relative height of decoupling at the dicrotic notch
EnvRatio                Envelope ratio
C_ratio                   Compliance ratio
C_ratio_mod          Modified compliance ratio
omega1_bar          Normalized omega1 (approach-dependent)
omega2_bar          Normalized omega2 (approach-dependent)
DicroticNotch        Time location of the dicrotic notch
Duration                Duration of one cardiac cycle
Pmin                      Minimum pressure value
Pmax                     Maximum pressure value
Diast_max              Maximum pressure during diastole
Diast_time              Duration of diastole
p_notch                 Pressure at the dicrotic notch
c                            Model fitting parameter
a1                          Amplitude coefficient of omega1
b1                          Phase shift coefficient of omega1
a2                          Amplitude coefficient of omega2
b2                          Phase shift coefficient of omega2
R1                          Reflection coefficient 1
R2                          Reflection coefficient 2
HR_BPM                 Heart rate (beats per minute), calculated from cycle duration

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Software: 
Matlab, Excel
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